Improvement in sash-balance



LEWIS GOODWIN, OF BANGOR, MAINE.

,Letters Patent No. 88,471, dated M11/rch 30, 1869.

IMPROVEMENT IN SASH-BALANCE.

The *Schedule referred to in these Letters Patent and making part of the same.

To all lwhom it may concern: p

Be it known that I, Lnwrs GOODWIN, of Bangor, in the county of Penobscot, and State of Maine, have invented a new and improved Sash-Adjustment; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the. art to make and use my invention, reference being had to the accompanying drawings, andv to the letters of reference marked thereon. of which said drawings- Figure 1 is a perspective view o fa window-frame and sash.

Figure 2 is a side View of the window-Stiles. Figure 3 is a sectional view of the window`stiles. All show the application of my invention.

I will now describe the construction and operation of my invention.

The window-frame and sash bein g constructed in the usual form and manner, I then provide the metal strip, I, which has a roughened, or corrugated surface, and I secure the saine in a groove, or recess in the windowstile A, by means of a screw at one end, as shown in rigs. 2 and 3.

I then provide the nut j and the metal thumb-screw G, which thumb-screw passes through the stile A, and rests against the strip I, as shown in iig. 3.

I then provide the metal slide H, which is slotted, to travel on the pin I, and perforated, as shown in iig. 2, to allow the end ofthe thumb-screw E to pass through it,the diameter ofthe screw being greater than the width ofthe slot, so that the screw cannot travel in it.

I place the slide H in -a groove,or recess, in the window-stile B, as shown in figs. 2 and 3,

I then provide the metal, or wooden strip, K, and secure the same in the groove in the window-stile B, and over the slide H, by means of a screw at one end, as shown in iig. 3.

I then provide the thumb-screw E, which passes' through the stile B and slide H, and rests against the strip K; as shown in iig-3.

I then provide the metal pulley D, and secure the same in the head of the sash-frame, just above the parting-strip mf.

I then connect the window-cord C to the stile A, in the usual manner, and to the slide Hin the stile'B, as shown in figs. 2 and 3.

1 provide the other stile, of the upper half of the window, with similarY slide, strip, thumb-screw, pulley, 85e., and will call them here, H' K E', Src.

In operation, the halves ofthe windowA being then in the position shown in tig. l, the screw Gis turned inward, and presses the strip I against the sash-frame, and the' lower half of the window is securely fastened.

The screw E being turned inward, passes through the perforation in the slide H, and presses the strip K against the sash-frame, and thus the upper half of the window is securely fastened.

When it is desired to open the window, the screw G may be turned out, and the lower half raised, without lowering, thereby, the upper sash, or the thumb-screws G andE may both be turned out so far, that the strips I and l( may not be pressed against the sash-frame; screw E, however, not being so far turned outward as toallow H to slide on the pin l and in that case, as the lower half of the window is raised, the upper half will drop an equal distance, the two halves Vof lthe window acting as balance-weights to each other.

lWhen, however, it is desired to drop the upper half of the window,withoutraising thelower half, the thumbscrews E and E' are turned out of the peribrations in the slides H and H, respectively; then, as the window is lowered, the slides are drawn out of the window-Stiles, and the pinsl and l travel the entire length of the Aslots in the slides, and, upon reaching the lower end of the slots, act as stops.

This sash-adj ustment is v'ery cheap and durable, and readily applicable to any of the cheap windows now in use.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A sash, provided with a strip, K, slide H, pin Z, and screw E or E', said screw serving the double pinpose of holding the sash in position, and of retaining or releasing the slide, substantially as set forth.

2. The combination, with the devices embraced in the preceding claim, of a cord and pulley, connecting the upper and lower sashes.

3. The combination of the devices embraced in the last preceding claim, with a friction locking-device, applied to the lower sash, substantially as set forth.

LEWIS GOODWIN.

Witnesses:

SIMON Emmer, Moses Goonwrs. 

